Field-stove



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FIKELD STOVE. APPLICATION FILED ocr. I9, 191s.

Patented Sfmt. 20,1921. n 6 SHEETS-SHEET l.

R. l. scHomTzER.

FIELD sTovE.`

APPLICATION FILED OCT. I9, 1918.

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HELD svTovE. APPLICATIDN FILED OCT. 19, 1918.

'Patented sept. .20, 1921. n 4 6vSHEETS-SHEET 3. 'm a gwuantoz R. l-l SCHONITZER.

FIELD STOVE;

APPLICATION FILED OCT. I9, 1918.

1,391,415. Patnwdsept. 20,1921.

SHEETS-SHEET 4. l

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f FIELD STOVE. APPLICATION FILED ocT. I9, |918.

I .1,39 11,41 5. Patented sept. 20, 1921.

R. I. SCHONITZER FIELD STOVE. APPLICATION FILED ocT. I9, IeIa.

Patented Sept. 20, 1921.

6 SHEETS-SHEET 6. ff

`hereinafter more lfully UNITED STATES yPari-:NT OFFICE.

RUDOLPH I. SCHONITZER, OF DETROIT MICHIGAN, ASSIGNOR 0F ONE-THIRD TO J'. K.

. WILLIAMS, `OF SPRINGFIELD, OHIO.

To all whom it may cof/acera: Y Y Be it known that I, RUDOLPH I. SCHO- NrrzER, a citizen of the United States, residin at Detroit, in the county of' Wayne and tate of Michigan, have invented new and useful Improvements in Field-Stoves, of which the following is a specification.

This invention is a eld stove, and while capable of general outdoor use, is particularly designed for army purposes.

'Ihe present invention has been particularly designed to obtain'a maximum of heating and cooking space with a minimum of stove size and construction. The several parts of the stove are arranged vto be telescoped into compact form for storage and transportation, the parts being ed and arranged that they may be readily assembled for use without the necessity vof manipulating Qany fastening devices, such for instance as bolts and nuts,` screws, springs, hooks or the like, while at the same time provision is made for insuring maintenance of the parts when they have been assembled in position for use.

It is a very important object of the invention to obtain a very large heating area with respect to the cubical contents of the cooking receptacles. v l

Further objects ofthe invention are to provide for the effective maintenance of the ire within the fire-box, irrespective of the character of the weather, the parts being so assembled that rain, snow,lsleet and wind do not materially affect the cooking operato the cooks, to provide a as for tion, other than inconvenience and therefore it is unnecessary covering or protection for the stove, instance a tent. A

Simple and effective means are provided for controlling the draft to the extent of obtaining substantially perfect combustion, thereby obviating occasioned by smoke.

With these and other kobjects in view, the present invention consists inthe combination and-arrangement of parts, as will be described, shown in the accompanying drawings, vand particularly set forth in the appended claims, it being understood that changes in the form, proportion, size and minor details may lbel made. within the scope of the claims, without departing from the spirit 'or sacrificing any of the advantages of the invention.

so construct-` the rigidt the annoyance ordinarilyy ,being open. It is l Specification of Letters Patent. Patented Sept. 20, 1921. Application fned octets! 19, 191s. serial No.` 258,847.

lIn the accompanying drawings,

Figure 1 is a central vertical sectional view of a field stove, embodying the features of the present invention and shown in nested or telescoped condition and contained in a box, for convenience in transportation and storage.

Fig. 2 is a side elevation of the stove set up for boiling purposes.

Fig. 3 is an enlarged detail on the line 3 3 of ig. 2.

Fig. 4 is a view similar to Fig. 2, showing the top portion only thereof and equipped with means for roasting and frying meat.-

Fig.v 5`is an enlarged fragmentary vertical sectional view taken through one side of the roasting and frying pan.

Fig. 6 is an enlarged fragmentary sectional view on the line 6-6 of Fig. 4.

yFig. 7 is a plan view of the cover for the boiling pot or receptacle.

Fig. 8 is an inverted bottom plan view of the fire-pot or box.

Fig. 9-is a side elevation of another embodiment of the invention.

Figs. 10 and 11 are detail views illustrating an adjustable support for the cooking receptacle shown in ig. 9.

Fig. l2 is a view similar trating the use of a different ing receptacle.

In Fig. 2 of the drawings, there has been illustrated one embodiment of the invention which includes a sectional view to Fig. 9, illusform of cookrepot or box 1, cylindrical in shape and made of sheet metal of suitable'gage, as is each of the several parts of the device. In one side of 'this fire-box is a suitable fire-door 2 through which fuel is introduced. Any sort ployed, such as coal, wood or any solid fuel that will burn free enough to boil liquid and bake, roast and fry'meats. As best shown in Fig. 8 of the drawings, it will be seen that the bottom of the fire-box is provided with aplurality of small openings 3, thereby producing a perforate bottom which constitutesv a grate. This perforate bottom of the'fire-box .is spaced above the ground or other support 'by means of legs 4. Each leg is cylindrical in shape and hollow, the bottom of the leg being closed and its top preferred to employ three such legs disposed at the apexes of an equilateral triangle in order to obtain a stable support for the fire-box. The top of the of fuel may be emfor a purpose as will be hereinafter described. For the purpose of supporting the heating chamber or drum 6 on the lirepot 1', there is provided a supporting bracket as best shown in detail in Fig .3 of the drawings, three such brackets beingl provided upon the drum 6 adjacent the lower end thereof and spaced equidistant,therearound The support consists of Va substantially L- shaped bracket 10, the upright arm 11 of which is flattened out and riveted to a reinforcing plate 12 which in turn is suitably secured to the drum 6. The horizontal' arm 13 of the bracket/extends inwardly through an opening14 in the, adjacent Wall of the drum 6 andrests upon the top edge of the fire-box 1. As there are three of these brackets, it will be seen that the drum 6 will be properly supported upon the top ofv the fire-box, lateral displacement being prevented by the telescoping of the parts 1 and 6.v

Suitable handles 15. are provided upon the heating drum 6 for convenience in,v handling the same. Each handleY is in the form of a ring or bail mounted to swing vertically in bearings 16, each extremity lof the handle being extended at substantiallyv right angles thereto, as at 17, best shown inF ig. 1'of ythe drawings, tol form a stop for engagement with the adjacent side of the drum 6 when the handleis swung up. into a substantially horizontal position. The drum is `provided with an annular series of openings 18V disposed between tlie lupper rings or'Y bands 8 and.9, which openings are controlled by means ofa rotatable damper ringr19 embracing the drum and disposed between the Y bands 8 and 9. This damper ring is provided with openings 2O corresponding to the openings 18,Y whereby the'draft through saidopenings may beconveniently controlled. A suitable handle 21 is provided upon the damper ring 1,9 for adjusting the same. Depending-.within the drum 6 is a. cooking receptacle 22 which is disposed concentri- -cally within the .drum and spaced therefrom.,` This receptacle 22r tapers downwardly to a bottom 23v disposed slightly above the horizontal arms ofthe brackets 10. At the top of this cookingv receptacle Y therel is an external annular horizontal flange 24 which rests upon the top edge of the drum 6, so as to support the cooking re-` ceptacle. within the drum. It will be noted Vthat there is an annular passage for the products of combustion, around the cooking receptacle 22 and between the same and the'drum 6, which-annular passage is closed at its top .by the flange 24. l Extending centrally through the cooking receptacle 22 is a tubular pipe or passage 25 which is openV at its bottom and in communicationwith the top of the fire-box, lsaid pipe or passage extending a suitableJ distance above the top of the drum, and'co'nstituting a'staek or chimcally opposite handles, one of which has been shown at 27, are provided on the part` 26 ofthe Vcooking receptacle 22'lfor convenience in lowering the 'latter into the drum 6 and for withdrawing thereceptacle from' and" telescopieally emthe drum. Of course, each handle is a v swinging handle capable ofvr being folded Y downwardly flat against the side of the part 26 so as to permit collapsing- Vof the parts as will hereinafte'rappear.' n

The open top ofthe cooking receptacle 22 may be closed by a cover, such as shown in Fig. 7 of the drawings.V This cover is made up of three parts designated 28, 29y and'SO.- The part 28 is a lcentral diametric part having a central openingl ,for-the'reception' Yof theVV top end Vof the pipe25, said part 28Y being vlong enough toy rest Vupon they flange 24. at y.the top ofthe receptacle 22. 'The l parts 29' and'BO are duplicates, and' each is segmental in shape so as to complete a circular cover and of dimensions to rest upon the flange 241' Eachjof the segmental cover j parts is provided with asuitable handle 32. i

As thus far described, it will be seen'that the parts Vmay be very Vconvenientlyassem- 'bledl by telescoping them one upon the other. It will further be noted that there are no separate or movable fastening devices which require manipulation), and therefore there are no parts likely to get out Of-order.k

Vhen assembled, a re inay be madel inthe i fire-box as in any ordinary stove, the prod'- ucts of combustion lbeing carried ofi' through i the pipe 25V and through any number of ex-v tensions thereof,.one such extension being shown atf33 in Fig. 2 of the drawings.

Vhateveris' to 'be boiled, suoli for instance as potatoes beans or the like, together with water, is placed inthe receptacle 22 through the open top thereof, the three-part cover being then replaced. It will here be noted that the middle cover part 28 is held in place by reason of the pipe 25 extending through the opening 31 in said part. It will now be understood that the products of combustion not only contact with the bottom of the receptacle 22 but also entirely surround the receptacle in the annular space defined by the receptacle and the drum 6, thereby subjecting the upright side walls of the receptacle to the heated products of combustion in a. very simple and e'l'licient manner. Furthermore, products of combustion are conducted upwardly through the pipe 25, which pipe constitutes an interior annular wall for the cooking receptacle,and thus said interiorv wall is subjected to the heated products of combustion. By this arrangement, the heated surface of the cooking receptacle 22 is very large with respect to the cubical contents of said receptacle, which is a very important object of the present invention.

By reason of the fact that the bottom of the fire-box 1 is supported in an elevated position, atmosphereic air will be drawn inwardly and upwardly through the perforate or gra-te bottom of the fire-box. Moreover, air will be supplied to the annular space between the drum 6 and the receptacle 22 through the annular space between the bottom portion of the drum 6 and the top portion of the fire-box 1. The draft can be brought under control by suitable manipulation of the damper ring 19.

vProvision has been made for roasting and frying meat ai; the same time that the receptacle 22 is employed for boiling purposes, and this feature is carried out as illustrated in Figs. 4, 5 and 6, wherein has been illustrated a roasting and frying pan 34 substantially cylindrical in form with its side walls tapering downward to an imperforate bottom 35. Depending from thev upper edge of the pan is a cylindrical drum member 36 reinforced at its open bottom with an external annular ring 37. The drum 36 and the side walls 34 of the pan define an annular passage or chamber for the reception of products of combustion, as will hereinafter appear. A suitable cover38 is provided for the pan, and said pan is also provided with diametrically opposite handles, one of which has been shown at 39 in Fig.\4. The drum 36 is provided with 'an annular series of openings 40 adjacent the top thereof. Vithin the bottom portion of the drum partl 36 there are three supporting brackets, one of which has been shown in detail in Figs. 5 and 6, and is U-shaped in form', as indicated at 41,'the ends 42 thereofbeing riveted or otherwise secured to the part 36. This sup-k porting bracket rests upon the top edge of a substantially conical pan support 43, the side walls of which taper downwardly to a central opening which. receives the top of the tapered pipe 25, whereby the roasting and frying pan is supported in place, and heated products of combustion are directed against the bottom of the pan in the side walls 34 thereof. Air is admitted through a series of openings 44 provided in the pan support. :Air is also admitted through the annular space between the top of the pan support 43 and the drum part 36. `When the roasting and frying pan is employed, the additional stack portion 33 shown in Fig. 2 is omitted, in order that the pan support may embrace and rest directly upon the top of the pipe 25. IVith the exception of the omission of the pipe extension 33, the invention as illustrated in Fig. 4 is the same as that illustrated in Fig. 2, the two figures being employed in order to illustrate the complete invention on a relatively large scale.

In Figs. 9 and 10, there is illustrated a slightly modilied form of the invention wherein 45 designates a cylindrical' fireebox substantially the same as that illustrated in Fig. 2, except that it is of less diameter, so as to fit within the firepot 1 when the parts are collapsed and nested, and also of greater height, so as to provide a combined firepot and heating drum or chamber, when used as illustrated in Fig. 9. The legs 46 are the same as the legs 4 except that they areslightly smaller so as to telescope therein. Near the top ofthe fire-box there is an annular series of openings 47 corresponding to the annular series of openings 18 around the top of the heating chamber or drum 6 of Figs. 1 and 4. The difference between the two forms resides in the fact that in each of Figs. 9 and 10 there is no damper ring, and the openings are preferably in the form of slots instead of circular as -in Figs. 2 and 4.

In Fig. 9, there has been shown a cooking receptacle 48 of suitable dimensions and tapered downwardly so as to fit within the opentop of the tire-box. This cooking receptacle' is provided with a central passage 49 in the form of a pipe open at opposite ends and extending through the cover 50 on the top of the receptacle. This pipe or passage 49 constitutes a stack or chimney for the oftake of products of combustion. Any number of lengths of pipe may be added to the pipe 49, as will be readily understood, one such additional section being shown at 51. In order that the receptacle 48 may be supported within the lire-box, a plurality of supporting brackets are provided, one kof them being shown in detailin Figs. 11 and 12. Each bracket is substantially T-shaped and includes a shank member 52 and a head 53, the opposite end portions of which constitute trunnions mounted in suitable bearings 54 provided upon a reinforcing plate 55 suitably secured to the exterior of the lirebox 45. The shank portion 52 works through a slot or opening 56 formed through the reinforcing plate 55 and the lire-box 45,A

and when in use rests against the stopr57 provided upon the interior of the fire-box.-

. parts of the lstove are nested, the shanks 52 of the brackets are swung upwardly into the slots or openings 56 so asto enable the telescoping of the several parts.

In Fig. 12 of the drawings, there has been shown an ordinary pan or receptacle 58 resting upon the top ofthe lire-box 45, said pan or receptacle being used for cooking purposes or for maintaining heated that which has been cooked in any one of the cooking receptacles 22, 34 and 48, while said receptacles are being used for further cooking purposes. Y

It will of course be understood that the combined fire box and heating drum 45, shown in Fi s. 9 and 12, and incollapsed condition in 4ig. 1, is a cooking unit independent of the unit shown in Fig. 2.

As shown in Fig. 1 of the drawings, the various parts of the apparatus may be telescoped into a relatively small space for convenience in storage and transportation. To arrangethe parts as illustrated, the fire-box f 1 is inserted downwardly through the open top of the drum 6 until it rests upon the horizontal arms 13 of the several L-shaped brackets 10. Then the combined iirepot and heating drum 45 is nested inside of the firebox 1 with its legs 46 telescoped with the legs 4 of the fire-box 1. Then the cooking receptacle 48 is placed inside of the part 45, and thereafter the cooking receptacle 22 is placed inside of the receptacle 48. Prior to the insertion of the two cooking receptacles, the pipe sections 33 and 51 are nested and placed centrally within the Cookino receptacle 48 so as yto be received within the nested pipe sections 25 and 49. The pan support 43 is inverted and placed downwardly upon the upper end of the pipe section 25, and then the roasting and frying pan 34'is inverted and placed over the pan support 43. Finally, the cooking receptacle 58 is inverted and placed downwardly over the top of the several nested members, the cover 59 of the cooking receptacle 58 being placed .on top of the inverted receptacle 58. l

It is preferred to have the collapsed or telescoped members contained in a wooden box, such as shown at 60, in Fig. l'of the drawings, whereby the stove will be housed and4 protected when not in use.

When it is desired to use the apparatus, the parts are successively removed upwardly and thereafter assembled in the forms showny in theV several drawings.

It will now be noted that I have dispensed 1. A field stove comprising a fire box having an open top, a grate bottom, legs toV support the fire box in an elevated position,`

a .heating drum communicating with and rising from the open top of the fire box, said drum being provided near its top with an annular series of inlet draft openings forming a communication between the atmosphere and the combustion space within the drum, a cooking receptacle associated with the heating drum, and an off-take conduit for the products of combustion.

2. A field stove comprising a fire boxhaving an open top, a grate bottom, legs to support the lire box in an elevated position, a heating drum communicating with and.

rising from the open top of the fire box,A

said drum 'being provided near its Vtop with that smoke and prodan annular series of inlet draft openings forming a communication between the atmosphere and the combustion space within the drum, and a cooking receptacle associated with the heating drum, said cooking receptacley having a pipe extendingtherethrough and communicating with Vthe fire b ox'for the oH-take of productsof combustion.

3. A field stove comprising a fire box having -an open top, a grate bottom, legs to support the fire box in an elevated position, a heating drum communicating withV and rising from the open top of the fire box, a cooking receptacle associated with the heating drum, and having a portion within the drum and spaced from the walls thereof, said drum being provided near its top with an annular series of inlet draft openings forming a communication between the atmosphere Vand the combustion space between the drum and the cooking receptacle, an oH-take conduit for the products of combustion.

4. A eld stove comprising a lire box having an open top, a grate bottom, legs to said drum being provided near its top with an annular series of inlet draft openings forming a communication between the atmosphere and the combustion space between the cooking receptacle and the drum, said cooking receptacle having a pipe extending therethrough and communicating with the fire box for the cfftake of products of combustion.

5. A ield stove comprising a fire box having an open top, a grate bottom, legs to support the fire box in an elevated position, a heating drum communicating with and rising from the open top of the ire box, and a cooking receptacle associated with the heating drum, said cooking receptacle having a pipe extending therethrough and communicating with the fire box for the ofi'take of products of combustion, the drum being provided with an annular series of inlet draft openings adjacent the top of the drum l and forming a communication between the atmosphere and the combustion space of the drum, and a movable damper ring for the control of the draft openings.

6. A field stove comprising a ire box having an open top, a grate bottom, legs to support the fire box in an elevated position, a heating drum above and communicating with the open top of the fire box, a removable cooking receptacle supported upon and within the drum and spaced therefrom, the drum and cooking receptacle defining an annular space for products of combustion, said annular space being closed at its top and open at its bottom, and a pipe carried by and extending upwardly through the cooking receptacle and open at opposite ends for the oftake of products of combustion, said drum having a damper controlled inlet leading from the atmosphere into the space between the drum and the cooking receptacle.

7. A field stove comprising a fire box having an open top, a heating drum aboveand in communication with the open top of the fire box, a cooking receptacle supported upon and within the heating drum and spaced therefrom, the walls of the drum and the cooking receptacle defining an annular space for products of combustion, said annular space being closed at its top and open at its bottom, the drum being provided with an annular series of inlet draft openings communicating between the atmosphere and the said annular spaces, and the cooking receptacle being provided with an open ended pipe extending therethrough for the offtake of products of combustion.

8. A field stove comprising a fire box having an open top, a grate bottom, legs to support the fire box in elevated position, a heating drum in communication with the open top of the fire box, a boiling receptacle having a portion within the heating drum and provided with an open ended pipe. extending upwardly therethrough for theoitake of products of combustion, said receptacle and drum being spaced to form an annuopen top of the fire box, a boiling receptacle having a portion within the heating drum and provided with an open ended pipe extending upwardly therethrough for the offtake of products of combustion, said receptacle and drum being spaced to form an annular combustion chamber, and a frying and roasting pan provided ywith a surrounding jacket in communication with and supported upon the open top of the pipe through the boiling receptacle.

10. A field stove comprising a iire box having an open top, a grate bottom, legs to support the fire box in an elevated position, a heating drum communicating with the open top of the fire box, a boiling receptacle for the heating drum and provided with an open ended pipe extending upwardly therethrough for the oftake of products'of combustion, a substantially conical pan-support open at opposite ends and supported upon and in communication with the top of the pipe, and a frying and roasting pan provided with asurrounding jacket supported upon and in communication with the open top of the pan support and supported upon said pan support.

11. A field stove having an open top fire box provided with a grate bottom and legs to support the lire box in an elevated position, and a removable heating drum of greater diameter than and telescopically embracing the top portion of the fire box and provided with an interior supporting member engaging the top of the fire box to support the drum on the fire box, said fire box capable of being introduced downwardly through the open top of the drum and supported upon the interior supporting member ofthe drum in the collapsed condition of the stove.

12. A field stove having an open top fire box provided with a grate bottom and legs to supoprt the fire box in an elevated position, and a removable heating drum of greater diameter than and telescopically embracing the top portion of the fire box and provided with an interior supporting member engaging the top of the fire box to sup- Port the drum on the fire box, said fir@ box y capable of being introduced downwardly through the open top of the drum and supported u on the interior supporting member of the rum in the collapsed condition of the stove, and `a cooking receptacle removably supported upon the top of the drum and of dimensions to telescope within the fire box inthe collapsed condition of the stove.Y

lspaced therefrom to Aform an annular space forY 'products of combustion, saidV annular space also accommodating the fire box in collapsed condition, va pipe extending upy wardly through the cookingreceptacleand open Iat opposite ends for the oiftake of products of'combustion, a substantiallyV conical pansupport removably engaged at its lower smaller end with the top of 'the ypipe and capable of'being inverted thereon in collapsed condition, and a roasting and `frying panremovably supported upon thepan support and capable of being inverted to house the pan support in collapsed condition. v

14. A field stove comprising a fire-box having an open top, -a grate bottom, legs toV support the lire-box in an elevated position, a heating drum in communication with the open top of the fire-box and supported thereon, a cooking receptacle having a portion within the heating drum and also provided with an enlarged portion above the heating drum, said receptacle land drum be,- ing spaced to form an annular combustion chamber, said combustion chamber being closed at its top by the enlarged portion of the cooking receptacle, said cooking receptacle havingv an off-take pipe extending therethrough and communicating at its lower end with the interior of the. drum, said combustion chamber being provided with a damper Vcontrol inlet leading from the atmosphere into said chamber.

1,5. A field stove having an open top Ifirebox provided with al grate bottom and' legs to support the lire-box in ,an elevated position, a removable heating drum open at opposite ends and having its lower end removably supported upon the lire-box and in lcommunication therewith, a removable cooking receptacle having a lower portion within the drumv andspacedtherefrom to form an annular combustion chamber, thetop vor the cooking receptacle having an enlarged portion closing the top of the combustion chamber and removably supported upon the top o1c the drum, an off-take pipe :extending through the cooking receptacle and open at opposite ends, and a damper controlled inlet leading from the" atmosphere 'into the combustion chamber adjacent theltopthereof.

RUDOLPH IQSCHONITZER. 

